docs: def get_path(self):
          """Gets the path to the focused statistics. Each step is a hash of
          statistics object.
          """
          path = deque()
          __, node = self.get_focus()
          while not node.is_root():
              stats = node.get_value()
              path.appendleft(hash(stats))
              node = node.get_parent()
          return path